[Riado]

Hi all,

I would really appreciate your help in this matter if you can, as I looked in a lot of areas for many hours and couldn't find the right information.

I need to build a small circuit board having a bi-color LED to indicate a power ON state (Green or whatever) and S3 standby state (amber or whatever). And need the LED to turn off when computer in OFF state.

I have established that I need to use the 5vsb (brown wire - pin 9 from the atx power supply) but this will lit the LED even when computer is in OFF state.

So, later I found that I need to use a NAND gate to achieve the desired results. But I have no idea what a NAND gate is, neither what wires I need to use.

Thanks again for looking into this.
Riado